Bertram Blank, CEN Bordeaux-Gradignan DESIR: facility layout DESIR: scientific objectives BESTIOL...
Transcript of Bertram Blank, CEN Bordeaux-Gradignan DESIR: facility layout DESIR: scientific objectives BESTIOL...
Bertram Blank, CEN Bordeaux-Gradignan
• DESIR: facility layout
• DESIR: scientific objectives
• BESTIOL
• LUMIERE
• DETRAP
• Transfer beam lines
• Context BARC/TIFR – DESIR: transfer beam lines
DESIR at SPIRAL2Désintégration, Excitation et Stockage des Ions Radioactifs
Decay, excitation and storage of radioactive beams
BESTIOL: BEta decay STudies at the SPIRAL2 IsOL facility
LUMIERE:Laser Utilization for Measurement and Ionization of Exotic Radioactive Elements
DETRAP:DESIR Trapping facilites
DESIR in three parts…
high-precision measurements of 0+-0+ and mirror decays: quark mixing 21Na, 23Mg, 31S, 39Ca, 66As, 70Br
-decay studies of neutron-rich and neutron-deficient nuclei
-> lifetime and decay spectroscopy: magic numbers and astrophysics 81Cu, 103-106Y, 81Cu, 83Zn, 86Ga, 87Ge, 88As, 92Se,100Kr,130Ag,139Sb,142Te
-> delayed charged-particle correlations (2p emission): pairing in nuclei
22Al, 23Si, 26P, 27S, 31Ar, 35Ca, 39Ti
-> 12C cluster emission: 112,114Ba: from decay to fission
Gamow-Teller strength distribution: shape coexistence, deformation
78-80Cu, 80-82Zn, 83-85Ga, 93-100Kr, 98,99,101In, 101Sn, 97-99Cd, 130-132In, 129-132Cd, 130Ag
Neutron emission probabilities Pn,2n: reactor physics
b-decay properties of neutron rich nuclei: reactor decay heat
BEta decay STudies at the SPIRAL2 IsOL facility
M.J.G. Borge, B. Blank et al., CSIC Madrid, CENBG
The BESTIOL facility
Future measurements at DESIR
• Measurements of ft for heaviest 0+ - 0+ decays• Most significant test of nuclear corrections• Test CVC over largest range possible
2011
Collinear Laser spectroscopy - spins - magnetic & quadrupole moments - change of charge radii N~Z = 28 (48-55Mn, 52-58Fe), 40 (A<89Zr, 88-101Sr, 89-103Y ), 50 (95-102Ag, 100-110Sn), N=82 (78-84Ge, 80-85Ga), N=104 (179-182Au)
-NMR spectroscopy and -delayed spectroscopy of polarized beams - spins - magnetic & quadrupole moments
Z=50, N=82: 132Sn region: 127-133In
purification by laser ionisation: CRIS method
F. Le Blanc, G. Neyens, P. Campbell et al., IPN Orsay, IKS Leuven, Univ. Manchester
Laser Utilization for Measurement and Ionization of Exotic Radioactive Elements
The LUMIERE facility
Laser spectroscopy in the 100Sn region
100Sn
• charge radii and moments for the most exotic isotopes
M. Bissel et al.
CRIS type beam line
multi-reflection TOF spectrometer for beam purification
Penning trap for mass measurements
− Binding energy of N~Z nuclei:
94,95,96Cd, 100Sn from S3
− Masses of A~100 nuclei: 97-100Kr, 99-102Rb, 101,102Sr, 102,103Y
− superallowed and mirror -decay Q values: 66As, 70Br, 78Nb, 82Tc,… 21Na, 23Mg, 25Al, 27Si, 29P, 31S, 35Ar, 37K, 39Ca, 41Sc
− Masses of r-process nuclei: 70,81Cu, 82Zn,100Kr, 130Ag,130-132Cd,131-133In
− Masses of transactinide isotopes with S3: Z~104, 106
MLL trap commissioning at Garching
P. Thirolf et al., LMU Munich
DETRAP: Mass measurements with the MLL trap
Measuring the heaviest masses
257Rf
• linking the super-heavy decay chains with direct mass measurements• testing the mass models for super-heavy elements• extrapolating into the unknown region
253No
P. Thirolf et al.
88-101,102SrA<89Zr
80-85,86Ga, 78-84,86-87Ge, 88As
N=Z line
179-182Au
Collinear laser spectroscopy -delayed spectroscopy of laser-polarized beams
8He
8He, 19Ne, 21Na, 23Mg, 25Al,27Si, 29P, 31S, 35Ar, 37K, 39Ca, 41Sc
- angular correlation: LPCtrap
90-92Se93-97-100Kr
138,139Sb,139-142Te94,95Ag, 96,97-99Cd
257Rf
Mass measurements: MLLTrap
66As, 70Br
127-133In129-130Ag, 130-132Cd
(Trap-assisted) -decay, TAS
98,99,101In,100,101Sn
78,79,80,81Cu, 80,81,82,83Zn
89-102,103-106Y
22Al, 23Si, 26P, 27S, 31Ar, 35Ca, 39Ti
56,58Zn
112,114Ba
RIBs from:RIBs from:- Fragmentation (S1)Fragmentation (S1)- n-induced fission (S2)n-induced fission (S2)- light particle transfer (S2)light particle transfer (S2)- fusion-evaporation (S3) fusion-evaporation (S3)
-delayed charge part. emission
DESIR physics cases: LOIs for DESIR
Possible interests from VECC
21 LOI’s for experiments at DESIR
DESIR
Low-energy beams from:S1, S2, S3 wide range of different isotopes state-of-the-art equipment
S3Productionbuilding
SPIRAL2 (S2)
GANIL – SPIRAL1 (S1)
Beam delivery to DESIR
TONNERRE
Silicon Cube
TETRA
LPCTrap
N -TOF detector
MLLTrapPIPERADE
+TAGS
BELEN
LUMIERE
BEDO
Identificationstation
Possible DESIR hall layout
DESIR
S3SP2 LINAC
Productionbuilding
Level 0: Hall (1500 m2)
Level -1: technical rooms (550 m2)
GANIL
DESIR beam lines: BARC-TIFR collaboration
Transfer beam lines
beam emittance: up to 20 .mm.mradbeam energy: 10 keV < E < 60keVlength of beam lines: ~140 m
• Design des lignes : optics, diagnostics, control, pumping system, safety and security (IPNO, CENBG, CSNSM, GANIL, BARC)• Construction and tests of a prototype section (IPNO, CENBG, GANIL, BARC)• Construction mechanical parts (BARC, IPNO, CENBG)• Installation at GANIL (GANIL, BARC, IPNO, CENBG)• Commissioning (GANIL, CENBG, BARC)• Control system programming with EPICS (?)
December 2009: first discussion with S.K. Gupta et al. March 2010: signature LIA between France (CNRS, CEA, GANIL) and India (BARC + TIFR) October 2010: First LIA meeting at GANIL: BARC/TIFR contribution to DESIR beams lines
Collaboration BARC/TIFR – SPIRAL2/DESIR
Cost estimate: Total : ~3822 k€ BARC contribution : 826 k€
optical elements, beam pipes,support structures
adaptation point of SPIRAL2 to adaptation point DESIR
RMSx,y=3mm, x,y RMS=20.mm.mrad, E/E=0.004pm, E=60kV, M=122 (ex.: 122Sn1+)
Production adaptation DESIR adaptation
L. Perrot et al., IPN Orsay
Transfer lines optics calculations: S2
Collaboration BARC/TIFR – SPIRAL2/DESIR
BARC/TIFR proposal (S.K. Gupta et al.):
1. Electrostatic steerers & quadrupole triplets ~ 40
2. Electrostatic benders 7
3. Two / three way switchyards 6
4. Support structure for above components &
140 m of beam lines tubes
DESIR:• exciting physics opportunities:
• Laser spectroscopy
• Decay studies
• Trap (assisted) measurement
• large variety of beams due to different production schemes
• state of the art equipment… possibilities for equipemnt from India
• large international collaboration
• DESIR letter of intent (Oct. 2006): 97 scientists
• DESIR technical design report (Jan. 2010): 111 scientists
• DESIR related LOIs for SPIRAL2 (Jan. 2011): 132 scientists
• collaboration with and contribution from BARC/TIFR, VECC and others
is must welcome
The DESIR Collaboration
France50%
Spain9%
Belgium3%
Bulgaria1%
Serbia4%
Netherlands3%
India2% Hungary
3%
Finland4%
Germany6%
U.K.8%
Romania4%
Russia1%
Switzerland2%
• ~120 scientists and engineers • ~35 different institutions • ~15 countries
DESIR collaboration
from drawings to reality…
• Completed end of 2010• Test with high intensity beams 2011• Adaptation to nuclear environment • Interfacing with HRS
SHIRaC cooler and buncher
G. Ban et al., LPC Caen
The high-resolution separator HRS
Final design of the HRSwhich includes: mecanical contraints radioprotection considerations optical needs
Resolution M/M ≈ 30000
Beam envelope in X: Beam envelope in Y:
T. Kurtukian Nieto et al., CENBG
S. Grévy, M. Gerbaux, D. Lunney et al., CENBG, CSNSM
not for mass measurements beam purification for trap-assisted spectroscopy
− high-precision measurements− ultra-pure samples - spectroscopy
TAS neutron arrays
Si Cube
Double Penning trap PIPERADE
Ft = ft (1 + R’ ) (1 – c + NS ) =
K2
F2V Mg (1 + R)
2
F2V
Mg
Kft
2
GT2A
Mg+
T1/2
QEC
BR
0+
0+
• gv = g * Vud
• verify conserved vector current (CVC) hypothesis
Super-allowed 0+-0+ Fermi decays
Pl. Sc.
DSSSD
µCPBeam
E. Liénard et al., LPC Caen
cooling & bunchingin a RFQ
trapping & decay measurement
- angular correlation measurement in a Paul trap:
-> exotic currents in the weak interaction: 6He, 8He , 19Ne , 35Ar
-> mirror decay studies: 21Na,23Mg,25Al,27Si,29P,31S,35Ar,37K,39Ca,41Sc
e+
e
nucleus
LPCTrap setup at GANIL/SPIRAL
µCP
DETRAP: Fundamental interactions at the LPCTrap
Precise measurements of angle
• within the SM
x : Fermi fraction; : GT/F mixing ratio
• angular correlation
a = -1/3
X. Fléchard et al., LPC Caen
6He
Future measurements: 8He , 19Ne , 35Ar
RFQ & HRS
DESIR: a low-energy facility for GANIL
http://www.cenbg.in2p3.fr/desir
S1S2
Projectile or targetfragmentation at95 MeV/A
main interest:very neutron- and proton-rich light nuclei1+ n+
SPIRAL1 beams
C
Source
UCx2000°C
diffusion / effusiondeuterons40 MeV neutrons
1+ n+
C
Source
UCx2000°C
diffusion / effusiondeuterons40 MeV neutrons
1+ n+
Fission, fusionevaporation, DIC
main interest:- fission products- medium-mass proton-rich nuclei
UCx2H
IS
UCx ISHI
n
2HTarget
2HIS
n
Target IS
Converter
e.g. 36Ar @ 20 MeV/A
SPIRAL2 beams
LISOL
Fusion-evaporationreactions at CoulombBarrier, DIC
main interest:- very heavy nuclei- N=Z nuclei- very short-lived isotopes- refractory elements
S3 beams
adaptation point of LIRAT (-1.75m ) to adaptation point DESIR (+1.5m).
RMSx,y=3mm, x,y RMS=20.mm.mrad, E/E=0.004pm, E=60kV, M=122 (ex.: 122Sn1+)
LIRAT adaptation
DESIR adaptation
Transfer lines optics calculations: S1
L. Perrot et al., IPN Orsay
adaptation point of S3 (-8.5m ) to adaptation point DESIR (+1.5m).
RMSx,y=3mm, x,y RMS=20.mm.mrad, E/E=0.004pm, E=60kV, M=122 (ex.: 122Sn1+)
S3 adaptation DESIR adaptation
L. Perrot et al., IPN Orsay
Transfer lines optics calculations: S3
EQUIPEX Funding request
Phase 1 (July 2012-June 2015): investment costsPhase 1 (July 2012-June 2015): investment costs
Work packagesEquipment cost (k€)
Management cost (k€)
Total (k€)
WP0: Project coordination 0 82.5 82.5
WP1: Buildings 7415.7 0 7415.7
WP2: Beam lines 5460 17.2 5477.2
WP3: Identification station 203.1 10 213.1
WP4: General purpose Ion buncher 390 90.2 480.2
WP5: User facilities 353.1 61.8 414.9
WP6: Pluridisciplinary and industrial prospective
5 17.1 22.1
Total (Phase1) 13826.8 278.8 14105.6
Phase 2 (July 2015 - December 2019): running costsPhase 2 (July 2015 - December 2019): running costs
Work packagesOperation cost (k€)
Management cost (k€)
Total (k€)
WP0: Project coordination 0 93 96.7
WP1: Buildings 542.6 0 564.3
WP2: Beam lines 225 0 234
WP3: Identification station 9 0 9.4
WP4: General purpose Ion buncher 18 0 18.7
WP5: User facilities 162 1.2 169.7
WP6: Pluridisciplinary and industrial prospective
5 11.4 17.0
Total (Phase2) 961.6 105.6 1109.8
EQUIPEX Funding request
answer in January 2012….